Data from five geopressured-geothermal wells and a number of hydropressured wells suggest that the average boron content of geopressured formations (sands and shales) may be about 25% less than the boron content of hydropressured wells. This difference, however, is less than the standard deviation of the boron content of sands or shales for either category of well. These data imply that the high pressures and temperatures encountered in geopressured formations have probably not had a major effect on boron diagenesis. The ratio of the average boron content in the shales to that in the sands is 3.3 for the geopressured formations; this ratio is 2.8 for the hydropressured formations. A study of boron in various grades of steel from a number of foreign and domestic sources indicates that boron content is normally low. We were concerned about this because boron is often added to high-strength steels intended for severe service. The data do suggest that boron content varies with steel type. The mean boron content of six K-55 steels was 2 ppm; the mean for four P-110 steels was 19 ppm.

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